SQL - 將數據類型varchar轉換為數字時出錯

Question

我在具有小數的表中有數據並存儲為varchar類型數據。 我需要將該數據放入另一個表中，該表的列為十進制數據類型（18,5）

我收到錯誤：

 Error converting data type varchar to numeric

問題在於此Share列

查詢我有

SELECT IFS.Bin,CFL.CUSIP,IFS.[FROM], 
--IFS.Shares 
--SUM(isnull(cast(IFS.Shares as money),0))
--CAST(isnull(IFS.Shares,0) AS VARCHAR(30))
 Shares =
  Convert(
     DECIMAL(18,5), 
     CASE
     WHEN IFS.Shares LIKE '%[^0-9]%' THEN IFS.Shares --NULL
     ELSE IFS.Shares
     END)
FROM 
mfclearing.ICE.ImportFileStaging IFS INNER JOIN 
mfclearing.Production.ClearingFundList CFL ON 
IFS.[From] = CFL.NasdaqSymbol

因此，如果我嘗試僅使用IFS.Shares ，我正在嘗試其他一些SUM和CAST，但最后一件事是我要做的就是Shares = Convert .....

不應該與此太相關，但我確實想要插入，所以我確實有一個插入語句正上面的Select語句INSERT INTO [InterclassExchangeBatchDetails](Bin,FromCusip,FromSymbol,Shares)

我正在使用的數據是引起問題的參考，這里是它的一個示例

521.92100000000005
9906.8510000000006
542.529
1043.8409999999999
3129.0839999999998
5285.4120000000003
104.367
126.98
332.02499999999998
530.12300000000005
575.57799999999997
895.56899999999996
1052.9349999999999
1167.0619999999999
1180.9939999999999
1630.8030000000001
247.232
2136.2040000000002
667.95500000000004
947.78599999999994
148.36000000000001
223.994
238.42699999999999
255.25700000000001
257.56999999999999
259.70600000000002
317.90199999999999
317.90199999999999
317.90199999999999
360.59199999999998
366.84399999999999
374.35000000000002
376.90199999999999
393.11500000000001
397.37200000000001
399.47699999999998
449.72699999999998
463.60899999999998
474.68599999999998
488.11599999999999
491.245
504.67399999999998
509.97899999999998
530.47199999999998
535.93299999999999
537.69799999999998
549.40599999999995
552.41700000000003
581.32600000000002
608.05100000000004

Answer 1

只需使用TRY_CONVERT() ：

Shares = TRY_CONVERT(DECIMAL(18,5), IFS.Shares)